Ball point pen



FIG. 1 is a perspective view of a ball point pen showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is one side elevational view thereof, the other side elevational view being a mirror image of the one view;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a ball point pen, as shown and described. 